I looked into some lists of DOS 6.22 commands and utilities, didn't see route listed. Thinking back (way back) I seem to recall we had to enter the TCP/IP details in a cfg file. I think it was called NET.CFG. That was for DOS PCs running Netware. I can't recall for certain though.

Since DOS didn't have any native networking, you'd have to have some additional software running. That software should have some method of setting and verifying your TCP/IP protocol stack details.

netstat -r will give you your routing table as well. Really depends on what software you're running though. If the PC in question is Win95 or later, you can use WINIPCFG, IPCONFIG, or ROUTE. If not we'd need to know more about what software you're running.